TLM 67
Electrical features
The letters “TLM” stand for “transformerless microphone”.
In the TLM 67, an electronic circuit is used rather than a
conventional output transformer. Like a transformer, the
circuit ensures good common mode rejection, effectively
suppressing interference signals that affect the balanced
modulation line. The microphone can operate at sound
pressure levels of up to 105 dB without distortion, and has
a dynamic range of 94 dB (A-weighted), without the use of
the pre-attenuation switch.
Filter and pre-attenuation
The pre-attenuation switch on the back of the microphone
can be used to reduce transmission levels by approx. 10 dB.
It should be used only when there is a risk of overloading
following devices due to very high sound pressure levels.
Use of the switch does not increase the dynamic range of
the microphone, but rather shifts it by 10 dB, to higher
sound pressure levels. The other switch on the back of the
microphone can be used to change the cutoff frequency of
the built-in high-pass filter, so as to suppress the effects
of impact sound and wind noise, or to compensate for the
proximity effect.
Operational reliability
Elastic mounting of the capsule supplies protection from
the transmission of structure-borne noise. If required, the
EA 87 elastic suspension and WS 87 windscreen are availa-
ble as accessories, for further suppression of structure-bor-
ne and wind noise. The PS 15 or PS 20 a popscreen can be
used if the microphone is to be addressed at close range.
Features
• Sound characteristics based on the legendary U 67
• Three switchable directional characteristics
(omnidirectional, cardioid and figure-8)
• Switchable high-pass filter and pre-attenuation
• Transformerless circuit technology
• New dual-color exterior design
Application Hints*
• Extremely versatile
• Vocal microphone (soloists and background choir)
• Broadcasting, dubbing and voiceovers
• Overhead microphone
• Spot microphone, and suitable e.g. for strings, especially
cello and double bass, as well as piano
Delivery Range
TLM 67 microphone, Case
Catalog No.
TLM 67 ................................................. pgr.............. 008605
* These are just some of the most common applications. We recommend additional experimentation to gain maximum use from this microphone.
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Omni
measured in free-field conditions (IEC 60268-4), tolerance 2 dB
Cardioid
Figure-8
Technical Data
Selection of Accessories
Acoustical operating principle ..............Pressure gradient transducer
Directional pattern....................................... Omni/cardioid/figure-8
Frequency range...................................................... 20 Hz...20 kHz
Sensitivity at 1 kHz into 1 kohm .............................. 10/18/9 mV/Pa
Rated impedance.............................................................. 50 ohms
Rated load impedance........................................................1 kohms
Signal-to-noise ratio, CCIR1) (rel. 94 dB SPL)................65/70/64 dB
Signal-to-noise ratio, A-weighted1) (rel. 94 dB SPL) ......78/83/77 dB
Equivalent noise level, CCIR1) .....................................29/24/30 dB
Equivalent noise level, A-weighted1) ........................ 16/11/17 dB-A
Elastic suspension, EA87....................... ni................ 007297
Auditorium hanger, MNV87.................... ni................ 006804
Stand mount, SG 87............................... blk .............. 008619
Windscreen, WS87................................ blk .............. 006753
Popscreen, PS 15 .................................. blk .............. 008472
Popscreen, PS 20 a ............................... blk .............. 008488
Battery supply, BS 48 i........................... blk .............. 006494
Battery supply, BS 48 i-2 ....................... blk .............. 006496
Power supply, N 248 EU......................... blk .............. 008537
Power supply, N 248 US ........................ blk .............. 008538
Power supply, N 248 UK ........................ blk .............. 008539
Maximum SPL (tube characteristic)2):
for THD < 0.5 % .................................................. 110/105/111 dB
for THD < 5 %.......................................................130/125/131 dB
Maximum output voltage......................................................–1 dBu
Dynamic range of the microphone amplifier:
Microphone cable, IC 3 mt ..................... blk .............. 006543
Microphone cable, IC4........................... ni................ 006547
Microphone cable, IC4 mt...................... blk .............. 006557
(A-weighted) for < 0.5% THD (for < 5% THD)................ 94(104) dB
Power supply........................................................................... P48
Matching connector microphone...........................................XLR3M
Weight ..................................................................................490 g
Diameter/Length...........................................................56/200 mm
A complete survey and detailed descriptions of all accessories are
contained in the accessories catalog
Meaning of color codes:
pgr = pearl gray, blk = black, ni = nickel, gry = gray
1) according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS 2) measured as equivalent el. input signal
Georg Neumann GmbH • Ollenhauerstr. 98 • 13403 Berlin • Germany • Tel.: +49(30)417724-0 • Fax: -50 • E-Mail: headoffi[email protected], [email protected]
Errors excepted, subject to changes • Printed in Germany • Publ. 05/08 527761
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